Secondary battery.



. PATENTED JAN. 20, 1903.

1. KITSEE. SECONDARY BATTERY.

APPLICATION FILED APR. 28, 1900.

30 MODEL.

affj aw 4 f INVENTOR Urn @T ISIDOR KITSEE, OF PHILADELPHIA,PENNSYLVANIA.

SECON DARY BATTERY.

SPECIFICATION forming part of Letters Patent No. 718,637, dated January20, 1903.

Application filed April 28, 1900 Serial No. 14,689. (No model.)

To all whom it may concern:

Be it known that I, ISIDOR KITSEE, of the city and county ofPhiladelphia,State of Pennsylvania, have invented certain new and usefulImprovements in Secondary Batteries, of which the following is aspecification.

My invention relates to an improvement in secondary batteries.

The object of my invention is to produce a battery of the Faure type,which has none of the disadvantages of this type as used to-day.

It is well-known that a battery-plate of the Faure type consists ofasupportingrid provided with perforations and the active material,suchas an oxid of lead, placed or plastered in said perforations. Such platehas the disadvantage that it easily buckles and that if disintegrationsets in it is difficult to repair the same without entirely dismantlingthe whole pile. In later years the manufacture of such plates wasdiscontinued, and recourse was taken again to secondary batteries of thePlant type. The durability of this type is greater than the durabilityof the type before mentioned; but the Weight of such cells is out ofproportion'to their storing capacity, and in such cases where weight isa great object-as, for instance, in the employment of automobilesthesecells can be used only with great disadvantage. To give figures, a cellWeighing thirty-five pounds manufactured by one of the largest of thestorage-battery manufacturers is capable only, according to their ownstatement, to give out in electrical energy eighty ampere hours, and, infact, this output is reduced in practice to about sixty ampere hours.

To produce a cell of great capacity and yet having none of thedisadvantages of the Plant cells as produced to-day is the object of myinvention.

Referringto the drawings, Figure 1 is a perspective view of what I calla skeleton frame of an individual block. Fig. 2 is a perspective view ofthe finished block. Fig. 3 is a section on line 3 3 of Fig. 2. Fig. 4.is a section on the line 4 4 of Fig. 3. Fig. 5 is a side elevation of aseries of blocks assembled into one electrode. Fig. 6 is a sideelevation of an electrode embodying my invention.

be placed into an electrolytic solution containing a nitrate of lead,or, if desired, an acetate of lead, and with the aid'of the currentmetallic lead can be deposited on its surface. In my experiments I havefound that it is hardly possible to deposit the metallic lead in thespaces without having this lead all over the outer and inner surfaces.It is therefore necessary if this mode of providing the skeleton withthe active material is adopted to compress from time to time thedeposited lead and to scrape the same from the outer surface. Each ofthe blocks is a unitin itself, and if an electrode is to be produced twoor more of these blocks should be assembled either with a conductingmaterial between the same, as shown in Fig. 5, or by simply placing oneblock upon the other without the intervention of any foreign conductor,as illustrated in Fig. 6. In Fig. 5, D is the conductor, bent so as toform spaces, into which these blocks are placed. In Fig. 6 the blocksare, as said above, without the intervention of any foreign conductorplaced one on top of the-other, and the face-plate of the uppermostblock is provided with the lug D, and the whole structure is providedwith the surrounding frame H. The whole series of these blocks iscontained in a frame which may be conducting or otherwise. frame arebolted together by the rivet F, and the whole electrode is provided withthe bands E. In practice it is best to provide the block lowest in theseries with the conducting-lug, as otherwise in raising the electrodethe contact between one and the other of the face-plates may bedisturbed.

In practice I prefer to make each of the individual blocks of about thefollowing dimensions: four inches long, three-quarters of an Theterminals of this IOO inch thick, and one inch high. It is obvious thatthese dimensions may be altered to suit the requirements. A personversed in the art will readily understand that the electrode formed ofsuch blocks cannot buckle, will ofier very low resistance, and as theblocks are interchangeable and readily removed and replaced the repairof any part of such an electrode is easily accomplished. As to capacityan electrode of this kind will have an electrical output, weight forweight, double the electrical output of the electrode as now used inautomobiles by one of the largest storage-battery companies and whichelectrode is of the Plant type.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an electric cell an electrode consisting of the conductor proper,said conductor formed so as to provide spaces for the active material incombination with an active material consisting of a series of individualand independent blocks, each block consisting of a conducting-skeletonand active material contained in the spaces of said skeleton.

2. An electrode for electric cells consisting of the conductor proper, aseries of individual and independent blocks, said blocks placed in therecesses with which said conductor is provided, each of said independentblocks consisting of a conducting-support and active material aroundsaid support.

3. In a secondary battery an electrode consisting of a conducting-stripbent in a manner so as to form spaces, a series of independent blocksplaced in said spaces, each of said blocks consisting of aconducting-skeleton and active material in contact with saidconducting-skeleton.

In testimony whereof I hereby sign my, name, in the presence of twosubscribing witnesses, this 27th day of April, A. D. 1900.

ISIDOR KITSEE.

Witnesses:

EDITH P. STILLEY, WALLACE B. ELDRIDGE.

